Rational Samaritans, strategic moves, and rule-governed behavior : some remarks on James Buchanan's "Samaritan's Dilemma"

Using James Buchanan's "Samaritan's Dilemma" as a basic example, this paper analyses the problems that have to be solved if strategic behavior is necessary to escape from dilemma situations by changing the opponents' incentives. These problems are addressed within one-shot games as well as repeated games. Furthermore, the implications resulting from the assumption of common knowledge of rationality are analyzed. By using the concept of finite automata to model strategies for supergames, the possible relations with evolutionary game theory are spelled out.